build: Fixes for newer tools.

Some trivial updates to fix the build with latest Automake.  Drop
support for Automake versions < 1.11.

diff --git a/.gitignore b/.gitignore
index 78d219c2c38ea73c95d143f7632b09ed194a081c..b37229964449dca5755a29f1ec47119de900714f 100644 (file)
--- a/.gitignore
+++ b/.gitignore
@@ -33,6 +33,7 @@ lib
 
 missing
 depcomp
+compile
 install-sh
 stamp-h1
 

diff --git a/configure.ac b/configure.ac
index d798674e891771fc9be1c4a2f804091e486dac12..0403ca170e78789a944461efd9aec7574865f0ec 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -10,10 +10,11 @@ AC_CONFIG_SRCDIR([src/lbx.c])
 AC_CONFIG_HEADER([config.h])
 AC_CONFIG_MACRO_DIR([m4])
 
-AM_INIT_AUTOMAKE([-Wall -Werror foreign subdir-objects])
-m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
+AM_INIT_AUTOMAKE([-Wall -Wno-portability foreign subdir-objects])
+AM_SILENT_RULES([yes])
 
 AC_PROG_CC_C99
+AM_PROG_CC_C_O
 gl_EARLY
 
 AC_HEADER_ASSERT